用vs2005 CNG写的一个加密文件及产生Product key 的demon，内含详细说明文件-vs2005 CNG use of a written document encryption key and have the demo Product n, documents containing details

The application wizard has created this CNGCryptFile application for you. This application not only demonstrates the basics of using the Microsoft Foundation Classes but is also a starting point for writing your application.

The Cryptography API: Next Generation(CNG) is a new and agile framework in Windows Vista, which implements an extensible provider model that allows you to load a provider by specifying the required cryptographic algorithm rather than having to hardco